As of this publishing date, Wikipedia continues to insist that Steve Gaines was born in Seneca, Missouri. The clipping below from the Miami News-Record of September 15, 1949, should remove all doubt. This is the Miami Baptist Hospital admittance announcements. And Steve was born on September 14, 1949, of course. And note that his parents were already living on Circle Drive.
If anyone has the ability to edit the erroneous Wikipedia article, this clipping should provide conclusive proof. It can also be accessed at newspapers.com.